From the technote:
Due to recent enhancements to the Adobe Flash Player installers, you can now remove the player only by using the Adobe Flash Player uninstaller.
When I was young enhancements were something else, I recollect. Oh yes, if you wonder how long does the uninstall takes: a VISE-style half-an-hour search. In other news: video playback on Mac still stutters like crap, looks like crap and sounds like crap, and ON2 is here to stay.